RRB NTPC 2021-08-03-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-08-03-2021-1 RRB Questions

11.
The fibres, such as nylon and polyester, that are made from chemical substances are called:
A.
Natural fibres
B.
Wool
C.
Synthetic fibres
D.
Silk
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ANSWER :
C. Synthetic fibres
12.
Tools, machines, building, etc. that are required for production are called:
A.
Fixed capital
B.
Working capital
C.
Physical capital
D.
Human capital
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ANSWER :
A. Fixed capital
13.
Which of the following are called the amphibians of the plant kingdom?
A.
Gymnosperm
B.
Thallophytes
C.
Bryophytes
D.
Pteridophytes
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ANSWER :
C. Bryophytes
14.

If x + \( \frac{1}{x} \) = 26, then the value of x² +\( \frac{1}{x^2} \) = ?

A.

24

B.

676

C.

674

D.

2

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ANSWER :

C. 674

15.

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

A.

8

B.

10

C.

6

D.

12

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ANSWER :

D. 12

16.

The value of \(\frac{\tan85^\circ-\tan25^\circ}{1+\tan85^\circ\cdot\tan25^\circ}\) is:

A.

\(\frac{1}{\sqrt{3}}\)

B.

1

C.

\(\sqrt{3}\)

D.

0

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ANSWER :

C. √3

17.
Which cricket player received the Padma Bhushan Award 2018?
A.
Ravindra Jadeja
B.
Virat Kohli
C.
Rohit Sharma
D.
Mahendra Singh Dhoni
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ANSWER :
D. Mahendra Singh Dhoni
18.
Which treaty was imposed by the five nuclear weapon powers and five permanent members of the UN Security Council on the rest of the world in 1968?
A.
Non Aligned Treaty
B.
Comprehensive Test Ban Treaty
C.
North Atlantic Treaty Organization
D.
Non-Proliferation Treaty
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ANSWER :
D. Non-Proliferation Treaty
19.
The mean of 22, 35, 15, 75, 66, 50, 52, 36, 70, 86 and 10 is:
A.
51
B.
57
C.
46.5
D.
47
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ANSWER :
D. 47
20.

Solve the following.
\(\frac{(28.4)^2-(24.4)^2}{28.4-24.4}\) = ?

A.

52

B.

8

C.

52.8

D.

4

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ANSWER :

C. 52.8